Added task4.

concept/Levels.txt

@@ -1,11 +1,28 @@
-1 -> 2: Gate
+*** Level 1 ***
 
 Complete 3 of 5 tasks:
 
-Task 1: Align 
+Task 1: Align three circles to allow a stick/plank to "punch thru". Symbol:
+Three circles with a stick on top.
 
-2 -> 3: Ladder
+Task 2: Colour-stones. 2x2 matrix, 1 well.
 
-3 -> 4: Starcase
+Task 3: Rolling stone. 10x10 matrix.
 
-4 -> 5: Lift
+Task 4: 
+
+Task 5:
+
+1 -> 2: Gate
+
+*** Level 2 ***
+
+2 -> 3: Staircase
+
+*** Level 3 ***
+
+Colour-stones 
+
+3 -> 4: Lift
+
+*** Level 4 ***